Hi, my cockatiels have recently started mating and nesting. They are both young, Pesses the female took a while to warm up to Rusty. They fuss a little now and then but a couple of days ago they were chasing eachother around the cage and Rusty now has a hole in his beak. Pesses seems to have been mad at the lack of honey treats in the cage because she got nicer when i put one in. Is this normal, anything i can do?